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Debt - Schedule of Maturities of Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Debt    
Remainder of 2018 $ 1,763  
2019 2,350  
2020 2,350  
2021 2,350  
2022 2,350  
Thereafter 220,312  
Senior Secured Credit Facility $ 231,475 $ 232,063